Plant for heating motor vehicles



Julie 1931- C. DE LA BARRE DE NANTEUIL 1,812,259

PLANT FOR HEATING MOTOR VEHICLES Filed Aug. 28, 1926 yen-lap a I- S Patented June 30, 1931. a.

i -.o RIsTIAhi'mmraRRE D11 NA 'rn rL, oavERsAILLE's,riwiifcn a PL NT Eon hEAtrmG i/io roIt vhmchhsj i QThe present 1 inven ion has? object plant for heating motor vehicles;

This plant is 'mainly characterized'by' the arrangement, on theexhaust tube of the en- 5 gine, of a tubular heat exchanger through v the tubes of which. preferably passfthe ex" haust gases forheating afluid (air 'or water) circulatingjin a casing: enclosing these tubes, the; said fluid; being subsequently used, 10 forh'eating thevehicle.

The invention is clearly illustrated hi the givenentiresatisfaction,concerning the per;

fection of the heating of'the car, the Complete absence of blowing'o'fdnst withinthe latter,

and the improvement in the efliciency o t-the englll'e Y This form of construction comprises, in

25 combination, the, tubular heat exchanger ariran'ged on'theexhaust pipe either 'in'the place and instead of-the exhaust box, or on the'iup side of the latterjjan inlet shaft divided; in several channels by baffle plates which dis of the exchanger,apipeline'leadinghthe hot air from the exchanger to a heating aperturej orto aradiator arranged in thecar, and a 'valve, which can be operated atlwi'll and arf-i ranged 'forpermitting either theelosing-ijof orifice allowing hot'air' to flow-in the atmosphere, or the closing ofthis orifice and the openingofthesaid pipe line.

The apparatus illustratedinfiheldr awing,

comprises an exchanger '1 provided with tubes 2 through which pass the exhaustfgase's. This exchanger is substantially. composed- 0']? 'a 'body'l receiving at its ends twotube plates 3 and. 4 and two caps e and f6 '-connected to pipes 7'8 whichpermit theapparatus tobe connected with the normal exhaust piping of theengine. T '5 The body 1 is open at its lower part and receives an air inlet shaft 19 the opening of I {)udicious choice of the clim'ensions,'as exhaust v v s p I g a V "through'ft-lie tubes, theynught be caused to t b e t a ream l'Ql flhout the en v a ingthe'tubes which,,instead of being hora -.th re1 ova1-o dust whichin practice has" the said pipe line? and the opening ofjan provedstobeabsolutely perfect,no'dustwhatthe cjontact'oif-the handtn a a t g 'Ventilation'is;ensured, since the'hot air is 100.

which ispreferablyturnedtowards the lront v of the car. This air shaft is preferably divided by balile plates 20 in several conduits of'theexchanger. i

1 Atthe upperpart'is arrangedfapipeline'21I J which connects the body 1 of'the'exchanger to a heating aperture or tea radiator arranged I withlnthe car. A flap valve l5 ,"pivoted;at 16, 6'0

and controlled from any suitable place by a suitable kinematic connection allows either to v .obturate the pipe linelv21fwhen it is desired 'to' suppress'the-heating an'dthen to open the 1 orifice 22 which allows jhotair to flowin' the 65 atmosphere, or to close this orifice and to a open the pipe line 21 it is desiredto heat the car. Of course, forobtaining a moderate;

heating the flapvalve-canjalso beleft ma lntermediateposition allowinga portion 0 7O the-hot air to flow towardsthe exterior, I l I Thebody of the-heat exchanger can be connected to the exhaust box'23, as illustrated', or this heat exchanger can serve, a;

ox, the normal exhaust box being then done way W :jII'istead of causing the exhaust gases topass passfbetw'een the tubes, the air then ciroulatQ zontal, might also; be yerti'callyfarranged; i r bly t tu iwi c-Ibe a fa s n quincunxllor staggered position for ensuring ever entering within the car, 7 The tubes can havei'any suitable cross section, obliquity or incl natlon and any curvature. V. r l

- ,.The intensity can evaluated fact i'f, V i

that the 1 grate of T the heatingf aperture very rapidly Ireaches a temperature interdicting Y i p the eonstantly renewed air of'the road, withiout there being any draught, dust or bad smell. 1

The considerable absorption of calories produced by the air in its circulation about the pipes of the heater ensures a suction which greatly promotes the evacuation of the exhaust gases, and, consequently the efficiency of the enginef In fact, experience shows that an engine provided with this air heater has a tendency to rotate more rapidly and at the same time the temperature of the water of the radiator has a tendency to fall.

The air heater in accordance with the invention is therefore always useful, in all seasons, since itconstitutes a muffler favorable for the engine and during winter an intense and immediate hot air stove.

Moreover, it is not cumbersome and does not 11cc 1 attention, since it does not comprise any complex mechanism.

It can be put, at will, in the place of the existing exhaust box, or it can be interposed on an exhaust pipe, the existing exhaust box being maintained. In both cases, the fitting up of this air reheater is extremely simple and rapid. The heating aperture in the car can be provided in the floor or in any wall and, obviously, does not occupy any room.

\Vhat I claim as my invention and desire to secure by Letters Patent is 2- 1. In a heat exchange device for use in heating vehicles, a casing, headers connected to the opposite ends thereof, parallel tubes conmeeting the headers together and positioned within the casing, one of the headers being connected to a source of heated fluid and the other header being provided with a discharge opening, said casing having openings in the top and bottom walls which extend from one header to the other longitudinally of the casing, an air inlet member connected about the bottom opening including a bottom wall inclined forwardly from the rear header and having an open front transversely disposed, inclined partitions within said air admitting member and forming conduits, each of which direct the incoming air to different zones of the tubes, a rearwardly inclined pipe leading from the upper wall of the casing and provided in its lowermost portion adjacent the casing with an orifice, and a valve located adjacent the orifice in said exit pipe and mounted to close either the orifice or the pipe.

2. In a heat exchange device for use in heating vehicles, a casing, headers formed at opposite ends of the casing, parallel tubes connecting the headers within the casing, one of the headers being connected to a source of heated fluid and a discharge opening in the other header, said casing being provided with ingress and egress openings by opposite sides of the casing to permit fluid to pass around the tubes, said ingress opening being disposed below the vehicle and comprising a plurality of parallel and superimposed partitions forming conduits each of which directs the fluid to different zones of the tubes.

3. In a heat exchange device for use in heating vehicles, a casing, headers formed at opposite ends of the casing, parallel tubes connecting the headers within the casing, one of the headers being connected to a source of heated fluid and a discharge opening in the other header, said casing being provided with ingress and egress openings by opposite sides of the casing to permit fluid to pass around the tubes, said ingress opening being disposed below the vehicle and comprising a plurality of parallel and superimposed partitions forming conduits whose inlets are displaced relatively to each other, each of the conduits directing the fluid to different zones of the tubes.

4-. In a heat exchange device for use in heating vehicles, a casing, headers formed at opposite ends of the casing, parallel tubes connecting the headers within the casing, one of the headers being connected to a source of heated fluid and a discharge opening in the other header, said casing being provided with ingress and egress opening by opposite sides of the casing to permit fluid to pass around the tubes, said ingress opening being disposed below the vehicle and comprising a plurality of parallel and superimposed partitions forming conduits arranged at an angle to the direction of the tubes, the inlets of the conduits being displaced relatively to each other, and each of the conduits directing the fluid to different zones of the tubes. 7

5. In a heat exchange device for use in heating vehicles, a casing, headers formed at opposite ends of the casing, parallel tubes connecting the headers within the casing, one of the headers being connected to a source of heated fluid and a discharge opening in the otherheader, said casing being provided with ingress'and egress openings by opposite sides of the casing to permit fluid to pass around the tubes, said ingress opening being disposed below the vehicle and comprising a plurality of parallel and superimposed partitions forming conduits arranged at an angle to the direction of the tubes, the inlets of the conduits being displaced relatively to each other, the inlets of the conduits direct ing the fluid to different Zones of the tubes, and a pipe connected to said egress opening, said pipe having an orifice therein, a valve locatedadjacent to the orifice in said pipe and means to operate said valve to either close said orifice or the said pipe.

In testimony whereof I have signed my name to this specification.

CHRISTIAN de la BARRE de NANTEUIL. 

